Vibronic coupling in candidate spin qubit material: Na<sub>9</sub>[Ho(W<sub>5</sub>O<sub>18</sub>)<sub>2</sub>]<i>x</i>35H<sub>2</sub>O

ORAL

Abstract

In order to unravel decoherence pathways in a candidate spin qubit system, we measured the vibrational properties of single molecule magnet Na9[Ho(W5O18)2]x35H2O. We compared our findings with complementary lattice dynamics calculations and models for spin-phonon and vibronic coupling. Magneto-infrared spectroscopy revealed field-induced changes near 63 and 370 cm−1 that we model in terms of f-manifold crystal field excitations activated by odd-symmetry vibrations. These findings advance the understanding of vibronic coupling in molecular magnets, place severe constraints on the spin energy levels in this system, and provide a strategy for designing molecular qubit materials with improved lifetimes.

*Research at the University of Tennessee is supported by the National Science Foundation (DMR-1707846).

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Presenters

  • Avery Blockmon

    • Department of Chemistry, University of Tennessee

Authors

  • Avery Blockmon

    • Department of Chemistry, University of Tennessee

  • Aman Ullah

    • Instituto de Ciencia Molecular, Universitat de Valencia

  • Kendall D Hughey

    • Department of Chemistry, University of Tennessee
    • University of Tennessee

  • Yan Duan

    • Instituto de Ciencia Molecular, Universitat de Valencia

  • Ken ONeal

    • Los Alamos National Laboratory
    • Department of Chemistry, University of Tennessee
    • CINT, Los Alamos National Lab

  • Mykhaylo Ozerov

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Lab

  • Juan Arago

    • Instituto de Ciencia Molecular, Universitat de Valencia

  • Alejandro Gaita-Arino

    • Instituto de Ciencia Molecular, Universitat de Valencia

  • Janice Musfeldt

    • University of Tennessee
    • Department of Physics and Astronomy, Rutgers University
    • Department of Chemistry, University of Tennessee